feat: when List schema sets max: 1, don't display add another button or index in card header

[jessicamcinchak]

Changes:

• Re-organises all "test" schemas and their mocks for unit tests into a subfolder
• Hides the "+ Add another" & card header index if the schema sets max: 1 ; always displays when max > 1 or undefined, or if there is no user data (eg max is 1, but first item is "cancelled" before any input, then "removed").

See new "Proposed advertisements" schema as example use case & feedback from August: https://opensystemslab.slack.com/archives/C5Q59R3HB/p1718050782075389?thread_ts=1717416055.509189&cid=C5Q59R3HB

[jessicamcinchak]

Build a 'list' component so that a user can input the information required about their project by minor and major application forms (Technical development card)

[github-actions]

Removed vultr server and associated DNS entries